1, Walnut Close, Harpenden has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 25 Sep 2018.

The property is not connected to mains gas and has high performance glazing. It is heated using a boiler and radiators (mains gas).

Since 2009 49 properties similar to 1, Walnut Close, Harpenden have sold within a radius of 650 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 5th December 2025, was 40, Granby Avenue, Harpenden, AL5 5QR, a freehold house which sold for £1,875,000.

Read more about house prices in AL5.

• Sold Dec 2025£1,875,000 | 5 Bed House40, Granby Avenue, Harpenden, AL5 5QR40, Granby Avenue, Harpenden, AL5 5QR
• Sold Sep 2025£1,752,500 | 5 Bed House27, Dalkeith Road, Harpenden, AL5 5PP27, Dalkeith Road, Harpenden, AL5 5PP
• Sold Aug 2025£1,750,000 | 5 Bed House5, Walnut Close, Harpenden, AL5 4FP5, Walnut Close, Harpenden, AL5 4FP
• Sold Jul 2025£2,100,000 | 5 Bed House4, Browning Road, Harpenden, AL5 4TR4, Browning Road, Harpenden, AL5 4TR
• Sold May 2024£2,000,000 | 5 Bed House10, Grasmere Avenue, Harpenden, AL5 5PS10, Grasmere Avenue, Harpenden, AL5 5PS
• Sold Aug 2023£1,825,000 | 5 Bed House21, West Way, Harpenden, AL5 4RD21, West Way, Harpenden, AL5 4RD
• Sold Aug 2022£2,200,000 | 5 Bed House13, Browning Road, Harpenden, AL5 4TS13, Browning Road, Harpenden, AL5 4TS
• Sold Jul 2022£1,930,000 | 5 Bed House32, Sauncey Avenue, Harpenden, AL5 4QJ32, Sauncey Avenue, Harpenden, AL5 4QJ
• Sold Jul 2022£2,030,000 | 5 Bed House2, Malbec Close, Harpenden, AL5 4FF2, Malbec Close, Harpenden, AL5 4FF
• Sold Aug 2021£1,725,000 | 5 Bed House3, Devonshire Road, Harpenden, AL5 4TJ3, Devonshire Road, Harpenden, AL5 4TJ
• Sold Jan 2020£1,680,000 | 5 Bed House5, West Way, Harpenden, AL5 4RD5, West Way, Harpenden, AL5 4RD
• Sold Oct 2019£1,750,000 | 5 Bed House58, Stewart Road, Harpenden, AL5 4QB58, Stewart Road, Harpenden, AL5 4QB
• Sold May 2019£1,700,000 | 5 Bed House6, Walnut Close, Harpenden, AL5 4FP6, Walnut Close, Harpenden, AL5 4FP
• Sold Apr 2019£1,600,000 | 5 Bed House3, Walnut Close, Harpenden, AL5 4FP3, Walnut Close, Harpenden, AL5 4FP
• Sold Apr 2019£1,600,000 | 5 Bed House4, Walnut Close, Harpenden, AL5 4FP4, Walnut Close, Harpenden, AL5 4FP
• Sold Jan 2019£1,500,000 | 5 Bed House6, Browning Road, Harpenden, AL5 4TR6, Browning Road, Harpenden, AL5 4TR
• Sold Dec 2014£925,000 | 5 Bed House12A, Manland Avenue, Harpenden, AL5 4RF12A, Manland Avenue, Harpenden, AL5 4RF
• Sold Jul 2010£1,350,000 | 5 Bed House7, Malbec Close, Harpenden, AL5 4FF7, Malbec Close, Harpenden, AL5 4FF
• Sold Nov 2009£450,000 | 5 Bed House1, Malbec Close, Harpenden, AL5 4FF1, Malbec Close, Harpenden, AL5 4FF
• Sold Oct 2009£450,000 | 5 Bed House6, Malbec Close, Harpenden, AL5 4FF6, Malbec Close, Harpenden, AL5 4FF

Of the 8 addresses on Walnut Close, Harpenden, AL5, 1, Walnut Close, Harpenden comes out as the 3rd largest and the 3rd most expensive in our analysis of the public data.

It is also £976k more expensive than the average property across the AL5 district.

• Manland Primary School

  300 m away
• Crabtree Junior School

  700 m away
• Crabtree Infants' School

  700 m away

• Sir John Lawes School

  100 m away
• St George's School

  500 m away
• Katherine Warington School

  900 m away

• Harpenden

  |

  800 m away
• Luton Airport Parkway

  |

  6.7 km away
• St Albans City

  |

  8.0 km away

The flood risk here is rated Very Low, based on Environment Agency data.